Optical waveguide

Timo Aalto (Inventor)

Research output: PatentPatent


A waveguide, which is part of an integrated optical circuit is arranged onto a planar substrate, and has a core section propagating light to a direction of propagation. The waveguide is a conversion waveguide between a ridge-type waveguide and a strip waveguide. In the conversion waveguide, the core section is made of the one and same material so that the cross-section of the core section transverse to the direction of propagation of light is two-step from both edges. The conversion waveguide has two layers of different widths so that the height of the first layer is equal to the height of the ridge of the ridge-type waveguide, and the height of the second layer is equal to the height of the base part of the ridge-type waveguide.

Patent family as of 26.8.2021
AT491964 E 20110115 AT20030745808T 20030411
AU2003216773 AA 20031020 AU20030216773 20030411
AU2003226845 AA 20031020 AU20030226845 20030411
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CA2482178 AA 20041008 CA20032482178 20030411
CA2482178 C 20110104 CA20032482178 20030411
DE60335352 D1 20110127 DE20036035352T 20030411
EP1495350 A1 20050112 EP20030745808 20030411
EP1495350 B1 20101215 EP20030745808 20030411
ES2360090 T3 20110531 ES20030745808T 20030411
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US2005213912 AA 20050929 US20030510746 20030411
US7221843 BB 20070522 US20030510746 20030411
WO03085429 A1 20031016 WO2003FI00276 20030411
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Link to current patent family on right 

Original languageEnglish
Patent numberEP1495350
IPCG02B 6/ 12 A N
Priority date11/04/03
Publication statusPublished - 12 Jan 2005
MoE publication typeH1 Granted patent


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